Sand-blast machine.



G. F. MOTZ.

SAND BLAST MACHINE.

APPLICATION FILED FEB. 10, 1913 a sums-sum 1.

Patented Dec. 16, 1913.

0. 'P. MOTZ.

SAND BLAST MACHINE.

APPLICATION FILED PER. 10, 19 13.

Patented Dec. 16, 1913.

3 SHEETS-SHEET 2.

W g I G. F. MOTZ.

SAND BLAST momma.

APPLICATION FILED FEB. 10, 1913. LQ8L547, Patented Deg. 16, 1913.

3 SHEETS-SHEET 3.

J HQ. 4

I I I I W I 1 -26 I '3 5 /0 113 75 35 9 M "F 3 32 directing r. MOTZ, or MONACA, eminent-vents,

assrenon To rnonmx aliasa cerirenr, or rrrcrsnus on, rnnnsrnvmtm; conr'onmion or was'r VIRGINIA.

SAND-BLAST Macrame.

Specification of Letters Patent.

1'.- .n, i ink/mi, it may conga 21 7i, l

e it lniown that i, {ii-memes lvlo'rz, zen of the United States, and resident on, a, in the county of Beaver and anisylvania, have invented a 116W and us lul improvement in Sand-Blast Marhinos; and i do hereby declare the following to be a full, clear, and exact description thereof invention relates tofi sand-blast nia- -.c O is ch11 r The object of my invention is to provide a. machine of this character in which the article to be sand blasted, such as a boulevard globe, mounted in position outside of the b or receptacle containing the sand and the sand-blast nozzle, so that the globe, or other article, is entirely exposed to view, enabling the operator to examine the globe to see Whether the article has been properly sand blasted Without the necessityot open ing the receptacle, and at the same time making it possible to adjust the globe in position or remove it therefrom Without t i of opening the receptacle.

est; ends my invention comprises, generally stated, suitable receptacle containii the sand, a sand-blasting nozzle contained Within said receptacle, means. for the sand from said nozzle, 21 sup- A ingplate or cover for said receptacle having an opening therein, and means for supporting position on said plate over said opening,

said nozzle directing the sand through the opening into the interior of said article supported in this manner. I 7

ln the accompanyii'ig' drawing, Figure 1 .1 Fig. 2 is a plan-view; 3 is a u"; transverse to 1 form of ware-ho]. T. p

the drawing the numeral 2 designates a suitable stand or frame. which supports the receptacle 3 containing the sand 4. This reco 'itacie 3 has the conical bottom 5, The stand 2 has the brackets (l arrangcd'at intervals at the upper end thereofv and. said brackets support the idle-rollers 7. Resting on the idlerollers 7 is the supporting plate or cover 8. ihis plate 8 has the circular rack 9 ut its outer edge. A Z-bar 10 conis a modified nects the depressed portion 11 ofthe coverv the article to be sand blasted in,

is a section which is surrounded by the flange 13,. This forms a support for the ring 14:. his ring 1 1 ,may be held in place by the buttons 15. The 14: has the shoulder 16 upon which the lobe 17 restsvvhen in position for sand-blasting. The ring 14 can be readily replaced by other rings havlng openings ofdiflerent sizes so that the machine is made readily adaptable for all sizes of globes.

support or stand 2 is the clutch-member 19. a pin- Wheel 20 on the clutch-member 19 engages the annular reel; 9 o fthe supportifigplate 8. A pulley 21-on the jsha'tt 23 is connected up by the belt 26' to a suitable overhead pulley. A pin-Wheel 27 on the shaft the shaft 29. A cranK-arm3Uis connectedto the shaft 29 and 'said'cranknrmis con- Mounted in the bracket 18 secured tot he '23 meshes with, the pin-Wheel 28 on bcin connected to the air-pipe 33 which is. screwed into the T-connect-ion or the pipe ea leading from a fan .or other source of supply. nozzle isenihedded in the sand and has the opening 41' for the admission of the sand, thefrco end of said pipe being bent upwardly and projecting above these-ease as to admit air, v a a The power-shake?) is connected up to any suitable source of po'Wer'and'said shaft is provided with the clutch-member 43 which is adapted to engage the clutch-member 19 so The sand-pipe 40 connected to the A spring 4 1 is interposed between'a collar 45 v 1 on. the shaft 42 and a yoke 46,'said spring tending to engagement withthe clutch-member 19'. A rod 47 is connected up to thf yoke 46an'd said rod extendsdown to tdtreadle 48,50 that by the operation of said treadlethe. clutch-member '43 clutch-member 19. I v y A valve 19 .is provided in the pipe 3% and said valve is closed bythe operation of the lreadle 458, said treadle having the link 50 -whichis connected up tothe arm 51 of the valve. v bracket and to the arm 51, said spring acting to normally open said valve 49. I In the operation of. my improved sandblast machine the operator places a globe 1 7- in position on the ring 14 and then removes his foot from the treadle 4581 The spring 14s throw the clutch-member 43 into is released from the The spring 52 is connected to the opening in thethe air throws the clutch'43 into engagement with the clutch 19 and a rotary motion is imparted to the pin-wheel 20, which in turn imparts a rotary movement to the supporting'plate carrying the-globe to'be sandblasted. At the same time through the C011. necti'ons described, a reciprocating motion is imparted to the rod 31 and the nozzle 36 is tilted up and down to change the direction of the operator removed his foot from the treadle 48 the spring 52 opened the valve 49 and was forced through the pipe 33 and sucked in the sand from the pipe 40 so as to discharge it through thenozzle 36. The nozzle 36 being directed up through the ring 14 directs the sand against the interior of the globe, and as the globe is rotating the sand is swirled aroundacting on all parts of the interior of the globe, so that an even and uniform action of the sand-blast is obtained. having the globe entirely exposed to view the operator is able to tell when the globe has been properly sand-blasted and it is not.

necessary to open the receptacle to examine the article as has been the case heretofore. Articles of different sizes may be taken care of and as the rings 14 are readily removable, no time is lost in this operation.

In Fig. 5 I have shown a shade of oblong form with open ends in which the shade is held at the top by the spring cap-piece 66.

- This cap-piece is mounted on a standard 60 on the supporting ring 14:. A spring 61 normally holds the cap in engagement with the top of the shade. The machine as shown in Fig. l is provided with an arm 62 l ulcrumed sand-blast At the same time that the Moreover by with a swivel 64 adapted to engage the rod 65 on the cap-piece 66. The other end of the arm 62 is connected to the treadle 48. By putting his foot on the treadle the operator releases the cappiece to remove the ware and at the same time cuts on the blast and stops the machine.

lVhat I claim is:

1. In a-sand-blast machine, the combination of a suitable receptacle, a rotary coverplate for said receptacle having an opening therein, and forming a support for j the article to be sandblasted, and. means within said receptacle for directing the sand through said opening into said article.

2. In a sand-blast machine, the combination of a suitable receptacle, a rotary plate forming a cover for same having an opening therein and forming a support for the article tc be sand-blasted, a nozzle within said receptacle, and means for directing the sandblast through said nozzle into saidarticle.

said opening into said article.

F. Morz, have hereunto set my hand.

CHARLES F, MOTZ.

Witnesses Bonner G. TOTIEN,

JOHN F. W1LL.

at 63, one end of said arm being provided article ceptacle for directing the sand-blast through In testimony whereof I, the said CHARLES to the rod 67 connected .3. In a sand-blast machine, the combina-- 

